Basic Radio Station Information



Tucson's Most Stimulating Talk

City of License:
Tucson, AZ


Tucson, AZ

Web site:

Live Stream:

General Manager:
Tom Zlaket

iHeartMedia (formerly known as Clear Channel) (Capstar Tx, LLC, As Debtor In Possession)

3202 N Oracle Rd
Tucson, AZ 85705


KNST is an AM radio station broadcasting at 790 KHz. The station is licensed to Tucson, AZ and is part of that radio market. The station airs news/talk programming and goes by the name "KNST AM790" on the air with the slogan "Tucson's Most Stimulating Talk". KNST is owned by iHeartMedia under the supervision of General Manager Tom Zlaket.

Also heard on FM at 97.1 FM.

Nearby Radio Stations

ESPN Deportes 990, KUAZ 89.1 FM, The Source 1290, 1400 KTUC, KTDT 99.1 FM, KCEE 690 AM, Rock 102, KQTH 104.1 FM, KGMS 940 AM, KKYZ 101.1 FM

Co-Owned Radio Stations in Tucson, AZ

My 92.9, Hot 98.3, 93.7 KRQ, La Preciosa 1450, Tejano 1600, 97.1 The Bull

Listener Comments and Reviews

Megan McCain will drive listener off your channel. Megan was Trashing Trump just like her father. I will turn off 790 if you keep McCain
By: George Peet on January 26, 2017

Thanks for having Ground Zero with Clyde Lewis! How about a couple more hours of his show? Keep up the good work
By: Rosemary on December 26, 2017

You know, Donald Trump calls news fake news. I can say that your news is not fake which is good. I am a bit disjointed in the some of the verbiage of Garret Lewis for their are times that much of the verbiage out of garrets mouth generates negativism regarding his views on things both locally and nationally. This can generate the same negativism in the listeners. I realize that this is done to generate a large listening base for knst and increase ratings. Also, the monies received by garret Lewis from his advertising of products may far exceed the wage that is received by knst. I often have to turn off knst because of the anger and foment that is generated by Garret Lewis. There are times when the station is not "Tucson Most Stimulating Talk" but rather "Tucson's Most Depressing talk because of the negativism communicated. I realize that you need to maintain a listener base for increased revenue for knst and garret will do anything to increase his income from the advertisers and negativism. Certainly there are radio hosts that can produce a more balanced approach to things. By the way, I am a Republican and not a Democrat. ~ Bob Black
By: Robert Black on June 13, 2018

We need a couple more hours of Ground Zero with Clyde Lewis......Great show...better than Glen Beck..
By: ronald p olivier on November 6, 2018

I love the line up on KNST AM...Listen all the time. Do not care for Glen Beck Show at all. Would like to see Ground Zero with Clyde Lewis his slot permanently with more air time. We all love the Ground Zero Show and George Noory Coast to Coast....Number 1 shows
By: linda marciniak olivier on November 6, 2018

I do 2 radio shows and a Podcast. The radio shows are on the Internet with a Global audience on the Late Night in the Midlands platform. ( ). I am interested in knowing how we go about getting one of my shows Syndicated on your station. Here is a sample of one of my shows: Here are where many of the shows are archived: We are transmitted on 7 or 8 different platforms - Youtube - iTunes - Google etc Please let me know, or maybe we can talk. Aage Nost 520-481-1507
By: Aage Nost on November 12, 2018

I live in oro valley az on lamber lane dr. and cannot get knst 790 on my radio only static and can get fm stations ok on radio what is the trouble? why cant I get am stations? thanks
By: pat doyle on December 11, 2018

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